<template>
  <panel-head :route="route"/>
  <div class="btns">
    <el-button :icon="Plus" type="primary" @click="open(null)" size="small">新增</el-button>
  </div>
  <el-table :data="tableData.list" style="width: 100%;">
    <el-table-column prop="id" label="id"/>
    <el-table-column prop="name" label="昵称" />
    <el-table-column prop="permissionName" label="菜单权限" width="500px"/>
    <el-table-column label="操作">
      <template #default="scope">
        <el-button type="primary" @click="open(scope.row)">编辑</el-button>
      </template>
    </el-table-column>
  </el-table>
  <div class="pagination-Info">
    <el-pagination
      v-model:current-page="paginationData.pageNum"
      :page-size="paginationData.pageSize"
      :background="false"
      layout="total, prev, pager, next"
      :total="tableData.total"
      size="small"
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
    />
  </div>
  <el-dialog 
   v-model="dialogFormVisible"
   :before-close="beforeClose"
   title="添加权限"
   width="500"
   >
     <el-form
     ref="formRef"
     label-width="100px"
     label-position="left"
     :model="form"
     :rules="rules"
     >
       <el-form-item v-show="false" prop="id">
        <el-input v-model="form.id" /><
       </el-form-item>
       <el-form-item label="名称" prop="name">
        <el-input v-model="form.name" placeholder="请填写权限名称" />
       </el-form-item>
       <el-form-item label="权限" prop="permissions">
        <el-tree 
        ref="treeRef"
        style="max-width: 600px;"
        :data="permissionData"
        node-key="id"
        show-checkbox
        :default-checked-keys="defaultKeys"
        :default-expanded-keys="[2]"
        />
       </el-form-item>
     </el-form>
     <template #footer>
        <div class="dialog-footer">
           <el-button type="primary" @click="confirm(formRef)">确认</el-button>
        </div>
     </template>
  </el-dialog>
</template>

<script setup>
import { ref, reactive, onMounted, nextTick } from 'vue'
import { userGetMenu, userSetMenu, menuList } from '../../../api/index'
import { Plus } from '@element-plus/icons-vue'
import { useRoute } from 'vue-router'
const route = useRoute()

// form的数据
const form = reactive({
  id: '',
  name: '',
  permissions: ''
})

// 树形菜单权限数据
const permissionData = ref([])
onMounted(() => {
  // 菜单数据
  userGetMenu().then(({ data }) => {
    permissionData.value = data.data
  })
  getListData()
})

// 列表数据
const tableData = reactive({
  list: [],
  total: 0
})

// 打开弹框
const open = (rowData = {}) => {
  dialogFormVisible.value = true
  // 弹框打开form生成是异步操作
  nextTick(() => {
    if (rowData) {
      Object.assign(form, { id: rowData.id, name: rowData.name })
      treeRef.value.setCheckedKeys(rowData.permission)
    }
  })
}

const paginationData = reactive({
  pageNum: 1,
  pageSize: 10
})

const handleSizeChange = (val) => {
  paginationData.pageSize = val
  getListData()
}

const handleCurrentChange = (val) => {
  paginationData.pageNum = val
  getListData()
} 
// 请求列表数据
const getListData = () => {
  menuList(paginationData).then(({ data }) => {
    const { list, total } = data.data
    tableData.list = list
    tableData.total = total
  })
}
// 默认权限
const defaultKeys = [4, 5]
const treeRef = ref()

// 控制弹窗的显示隐藏
const dialogFormVisible = ref(false)

// 关闭弹窗的回调
const beforeClose = () => {
  dialogFormVisible.value = false
  // 重置表单
  formRef.value.resetFields()
  // tree选择重置
  treeRef.value.setCheckedKeys(defaultKeys)
}

const formRef = ref()
const rules = reactive({
  name: [{ required: true, trigger: 'blur', message: '请输入权限名称' }]
})
// 表单提交
const confirm = async(formEl) => {
  if (!formEl) return
  await formEl.validate((valid, fields) => {
    if (valid) {
      // 获取到选择checkbox的数据
      const permissions = JSON.stringify(treeRef.value.getCheckedKeys())
      userSetMenu({ name: form.name, permissions, id: form.id }).then(({ data }) => {
        beforeClose()
        getListData()
      })
    } else {
      console.log('error submit!', fields)
    }
  })
}
</script>

<style lang="less" scoped>
.pagination-Info {
  padding: 10px 0;
  background-color: #fff;
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.btns {
  padding: 10px 0 10px 10px;
  background-color: #fff;
}
</style>